[LeetCode]题解(python):051-N-Queens 题目来源 https://leetcode.com/problems/n-queens/ Then-queens puzzle is the problem of placingnqueens on ann×nchessboard such that no two queens attack each other. Given an integern, return all distinct solutions to then-queens puzzle. Each solution con...
Python 实现 class Solution: def isSquare(self, n: int) -> bool: sq = int(math.sqrt(n)) return sq*sq == n def numSquares(self, n: int) -> int: # four-square and three-square theorems while (n & 3) == 0: n >>= 2 # reducing the 4^k factor from number if (n & 7)...
This repository contains the solutions and explanations to the algorithm problems on LeetCode. Only medium or above are included. All are written in C++/Python and implemented by myself. The problems attempted multiple times are labelled with hyperlinks. Topics algorithms leetcode cpp Resources Re...
0017 Letter Combinations of a Phone Number LeetCode 力扣 Python CSDN Medium 回溯、暴力 0034 Find First and Last Position of Element in Sorted Array LeetCode 力扣 Python CSDN Medium 二分 0039 Combination Sum LeetCode 力扣 Python CSDN Medium 回溯 0040 Combination Sum II LeetCode 力扣 Python CSDN...
我在这里也只是我的情况,因为转cs的,刚开始不知道怎么刷,拿到2sum就懵逼,记得很清楚,想用python写一个双for loops,写不出来,因为不知道怎么用Python的for loop把值和值的坐标都拿到。就是这么菜。于是在实验室的小伙伴的建议下,转了Java,因为Java反正只能老老实实写一下for loop就好了。当然了,你可以说...
python版的代码一行完事: View Code 383. Ransom Note https://leetcode.com/problems/ransom-note/ 就是用后一个串合成前一个串,条件是后一个串的每个字符只能用一次,这种题都可以利用c++的字符和int型转换来构建一个长为26度数组,每个数组表示一个key(前提是全大写或者全小写)。
一. 树 1）求二叉树的高度（Maximum Depth of Binary Tree）// LeetCode, Maximum Depth of Binary ...
【LeetCode】207. Course Schedule 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/course-schedule/description/ 题目描述: There are a total of n courses you have to take, labeled from0ton-1....
* For example, do not use pow(x, 0.5) in c++ or x ** 0.5 in python. Example 1: Input: x = 4 Output: 2 Explanation: The square root of 4 is 2, so we return 2. Example 2: Input: x = 8 Output: 2 Explanation: The square root of 8 is 2.82842..., and since we round ...
Remember solutions are only solutions to given problems. If you want full study checklist for code & whiteboard interview, please turn to jwasham's coding-interview-university. Also, there are open source implementations for basic data structs and algorithms, such as Algorithms in Python and Algori...